Recent experience in some countries has shown that overproduction not only wastes money and time, it can also have a negative effect on the plant's future yield.
一些国家的最近经验显示，超额生产不仅浪费资金和时间，还可对植物的未来产量产生负面影响。
A new method is present to achieve saving energy and environmental protection on diesel engine by negative-ion. and some experimental study have done to discuss the theory about this effect.
提出了一种用负离子来实现柴油机节能环保的新方法，进行了相关的试验研究，探讨了负离子对柴油机节能环保的机理。
Computers are less helpful to children's study, and some people say computers have a negative effect on children's physical and mental development.
电脑给孩子的学习提供很少的帮助，人们认为电脑对孩子的身体和智力有不好的影响！
Computers are less helpful to children's study, and some people say computers have a negative effect on children's physical and mental development.
电脑给孩子的学习提供很少的帮助，人们认为电脑对孩子的身体和智力有不好的影响！
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